Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net income	$ 27	$ 34	$ 74
Net cash flow hedge amounts reclassified to earnings	0	6	19
Change in fair value of cash flow hedges	0	(4)	(13)
Total other comprehensive income	0	2	6
Comprehensive income	27	36	80
Comprehensive income attributable to noncontrolling interest	8	2	2
Comprehensive income attributable to Regency Energy Partners LP	$ 19	$ 34	$ 78